Despite not touring since 2011, U2's combined wealth makes them the third highest-grossing music millionaires in Britain and Ireland.
With only Sir Paul McCartney and his wife Nancy Shevell and Lord Andrew Lloyd-Webber in front of them, the Irish band is worth an estimated €612 million, according to the Sunday Times Rich List.
The money is spread between band members Paul 'Bono' Hewson, Dave 'The Edge' Evans, Larry Mullen and Adam Clayton, as well as their manager Paul McGuinness. Their fortune increased by €8 million this year.
Mullingar native and One Direction member Niall Horan has also joined the rich list. Along with fellow band members Harry Styles, Liam Payne, Zayn Malik and Louis Tomlinson, Mr Horan is worth an estimated €6 million.
The band is worth around €30 million, making them the richest boy band in Britain and Ireland. This is their first time on the list.
However, the young boy band is placed at joint 17th on the list of young music millionaires in Britain and Ireland. The list is topped by Adele, who is worth €35 million. Adele topped the list last year with €24 million.
Riverdance creator Michael Flatley makes it to 7th place on the list of music millionaires with his €225 million fortune, which is down on last year by €1 million.
The Sunday Times started to measure wealth in Ireland as part of its annual Rich List in 1997. This is the 25th year the list has been compiled. The full list will be published on April 21st.